[Decade-long Battery Life] Featuring a backup battery, the pcf8563 chip can run for up to ten years when the system is powered off, ensuring uninterrupted timekeeping.
[Precise I2c Rtc Module] This low-cost module offers superior accuracy compared to ds1302 or ds1307, making it a reliable choice for timekeeping needs.
[Comprehensive Interface] In addition to sda and scl interfaces, the pcf8563 also supports int and cot, providing a complete solution for diverse connectivity requirements.
[Highly Functional Rtc Board] The pcf8563 rtc board ensures accurate real-time clock/calendar function independently of the mcu status, driven by an onboard battery.
[Expanded I2c Support] With support for bus cascade, users can easily connect multiple i2c modules using pin or row seat docking methods for enhanced functionality.

Specification:
Item Type: Real Time Clock Module
Wide Voltage Range: 1.0-5.5V
Typical Value: 0.25uA
Output Frequency: 32.768KHz, 1024Hz, 32Hz, 1Hz
Battery: CR1220 3V
Board Size: Approx. 4.2 * 1.7cm / 1.7 * 0.7in

Package List:
1 * Real Time Clock Module
1 * Pin Header
1 *

Notes:
1. The yellow pin shall be attached to the customer during delivery, but not welded to the board; The customer can weld pin or not weld or weld other connectors according to his own needs.
2. The attached program is tested and passed on STC89C52. ​ compilation environment only provides reference and theoretical technical support, but does not provide debugging and reading service.